3 socially responsible ads

1) Ogilvy & Mather's "Real Beauty" campaign for Dove
One of the most well-known ad campaigns, and as far as I have seen, has some of more viewed videos on youtube than any commercial. This campaign is almost 'counter-advertising' in terms of its message for young women in our society. Real beauty IS on the inside, and in the commercial and materialistic world we live in, this is often difficult to see. Additionally, from a PR perspective, I can't imagine ANY negative publicity received from this campaign for either Ogilvy or Dove. Makes you wonder why truly good messages aren't seen more...
2) Droga5's "Tap Project" for UNICEF
Having just recently seen the making of the project, and the enormous results it generated, this is an example of a socially responsible ad which has taken responsibility to a new level by quantifying it. Not only are they sending out a good message, but children around the world are being taken care off, and even saved. A great campaign and an excellent message.
3) Arnold and Crispin Porter Bogusky's "Truth Campaign"
While I personally dislike these ads, and find them a little too extreme, the sentiment is good. Smoking is bad, and while everyone knows this, I think the target for this particular campaign is younger children before they enter the treacherous world of tobacco and nicotine. So, although I personally think the execution behind the campaign isn't the best, it is is still socially responsible advertising.